Would making a simple IR repeater be as simple as using an IR reviver diode, IR LED, transistor and power? And would it be responsive enough to not interfere with the remote that it controlling it? My cable box is in a bad spot but it's not completely isolated from the remote beam so it would be still occasionally getting light from the remote in addition to the repeater. I could find a way to deal with that obviously but it would be nice if I didn't need to.